java - Insert null into Date/Time field in MS Access- -


i have been trying insert null values date/time column in ms access keep on getting error

below variants on how set null values

string processeddate = ""; // doesn't work string processeddate = null; // doesn't work

the error during sql insert

java.sql.sqlexception: [microsoft][odbc microsoft access driver] data type mismatch in criteria expression

my insert query written in java

insert donordetails ([signup date],remarks, [date processed])values ('25/03/2014','','')

do have explicitly construct sql statement without [processed date] column when know value null ? or there easier way ?

it's not clear how constructing query, habit create prepared statement this:

preparedstatement ps = connection.preparestatement("insert donordetails (signup_date, remarks, date_processed) values (?,?,?)"); ps.settimestamp(1, sometimestamp); ps.setstring(2, someremark); ps.setnull(3, types.timestamp);

this won't dependent on database , driver used , solves problems inserting null(see last line).

p.s. don't know brackets([]) mean in insert guessed column names


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